Rename Hard Disk

Rename Hard Disk in Unix

ubuntu@ubuntu:~$ ll /sys/block/sda/device
lrwxrwxrwx 1 root root 0 Feb  4 14:45 /sys/block/sda/device -> ../../../2:0:1:0/
ubuntu@ubuntu:~$ ll /sys/block/sda/device/delete
--w------- 1 root root 4096 Feb  4 14:55 /sys/block/sda/device/delete
ubuntu@ubuntu:~$

ubuntu@ubuntu:~$ ll /sys/block/sdb/device
lrwxrwxrwx 1 root root 0 Feb  4 14:45 /sys/block/sdb/device -> ../../../3:0:1:0/
ubuntu@ubuntu:~$ ll /sys/block/sdb/device/delete
--w------- 1 root root 4096 Feb  4 14:57 /sys/block/sdb/device/delete
ubuntu@ubuntu:~$

sudo -i

echo offline > /sys/block/sda/device/state
echo offline > /sys/block/sdb/device/state

 

echo 1 > /sys/block/sda/device/delete
echo 1 > /sys/block/sdb/device/delete

scan this hosts hard disks

echo "- - -" > /sys/class/scsi_host/host2/scan   ( /dev/sda for my ref )

echo "- - -" > /sys/class/scsi_host/host3/scan   ( /dev/sdb for my ref )

Reference :

http://fibrevillage.com/storage/279-hot-add-remove-rescan-of-scsi-devices-on-linux